MESON Chess Problem Database

Problem Display
PID: 204425 (8/3rpK1p/B1Qb2Pr/2pNPN1n/R4p1B/Rq3k1P/6p1/3b4 w - - 0 1)

Ellerman, Arnoldo

4th Prize, L'Italia Scacchistica, 1925

8/3rpK1p/B1Qb2Pr/2pNPN1n/R4p1B/Rq3k1P/6p1/3b4

#2

11 + 12

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Qxa3
      • 2.Sc3#
      • 2.Sde3#
      • 2.Sb4#
      • 2.Sxf4#
      • 2.Sb6#
      • 2.Sf6#
      • 2.Sc7#
      • 2.Sdxe7#
    • 1...Qc3
      • 2.Sxc3#
      • 2.Sde3#
      • 2.Sb4#
      • 2.Sxf4#
      • 2.Sb6#
      • 2.Sf6#
      • 2.Sc7#
      • 2.Sdxe7#
      • 2.Rxc3#
    • 1...Qd3
      • 2.Sxf4#
    • 1...Qe3
      • 2.Sdxe3#
      • 2.Sb4#
      • 2.Sxf4#
      • 2.Sb6#
      • 2.Sf6#
      • 2.Sc7#
      • 2.Sdxe7#
    • 1...Sg3
      • 2.Rxf4#
    • 1...Sf6
      • 2.Rxf4#
    • 1...Sg7
      • 2.Rxf4#
    • 1...c4
      • 2.Sc3#
    • 1...e6+
      • 2.Sde7#
  • Keys
    • 1.Be1!
      • threat
        • 2.Sh4#
      • 1...e6+
        • 2.Sde7#
      • 1...Qd3
        • 2.Sxf4#
      • 1...c4
        • 2.Sc3#
      • 1...Sg3
        • 2.Rxf4#
      • 1...Sf6
        • 2.Rxf4#
      • 1...Sg7
        • 2.Rxf4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • Q(c);N_PINS(E)::QAB(I)+S(E),XP(e)
    • S(g);N_GUARD::R1(C),XP(e)
    • P(f);N_PINS(E)::QAB(I)+S(E)
    • P(k);CHECK,N_PINS(E)::QAB(I)+S(E)
  • Actual
    • B(D);
    • Threat
      • S(G)
    • Vars
      • P(k);CHECK,N_PINS(E)::QAB(I)+S(E)
      • Q(c);N_PINS(E)::QAB(I)+S(E),XP(e)
      • P(f);N_PINS(E)::QAB(I)+S(E)
      • S(g);N_GUARD::R1(C),XP(e)
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Developed and maintained by Brian Stephenson.
Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) & CSS/Javascript (jQuery, Bootstrap & DataTables).